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Reaching Beyond the Horizon: Research, Scholarship, and Creative Activity Gateways (open access)

Reaching Beyond the Horizon: Research, Scholarship, and Creative Activity Gateways

Keynote address from Angela K. Wilson, who discusses four lessons she learned while doing undergraduate research.
Date: 2014
Creator: Wilson, Angela K.
Object Type: Article
System: The UNT Digital Library
Kinetic studies of the reaction NH₂ + H₂S (open access)

Kinetic studies of the reaction NH₂ + H₂S

Article on kinetic studies of the reaction NH2 + H2S.
Date: January 21, 2014
Creator: Gao, Yide & Marshall, Paul
Object Type: Article
System: The UNT Digital Library
Synthesis of Nickel and Nickel Hydroxide Nanopowders by Simplified Chemical Reduction (open access)

Synthesis of Nickel and Nickel Hydroxide Nanopowders by Simplified Chemical Reduction

This article presents a simple, inexpensive, and efficient chemical method of synthesizing nickel and nickel hydroxide powders with nanometer-sized particles.
Date: February 5, 2014
Creator: Tientong, Jeerapan; Garcia, Stephanie; Thurber, Casey & Golden, Teresa
Object Type: Article
System: The UNT Digital Library
Comments Concerning "Study of Molecular Interaction in Binary Liquid Mixtures of Ethyl Acetoacetate with Chloroform and Dimethylsulphoxide using Excess Acoustic Parameters and Spectroscopic Methods (open access)

Comments Concerning "Study of Molecular Interaction in Binary Liquid Mixtures of Ethyl Acetoacetate with Chloroform and Dimethylsulphoxide using Excess Acoustic Parameters and Spectroscopic Methods

Article commenting on a previously published article, "Study of molecular interaction in binary liquid mixtures of ethyl acetoacetate with chloroform and dimethylsulphoxide using excess acoustic parameters and spectroscopic methods."
Date: February 18, 2014
Creator: Acree, William E. (William Eugene) & Stephens, Timothy W.
Object Type: Article
System: The UNT Digital Library
Controlled Depositions of Metal and Metal Cluster Ions by Surface Field Patterning in Soft-Landing Devices (open access)

Controlled Depositions of Metal and Metal Cluster Ions by Surface Field Patterning in Soft-Landing Devices

Patent relating to controlled deposition of metal and metal cluster ions by surface field patterning in soft-landing devices.
Date: April 19, 2011
Creator: Verbeck, Guido F. & Davila, Stephen
Object Type: Patent
System: The UNT Digital Library
Supporting Material for: Thermochemical Investigations of Solute Transfer into Ionic Liquid Solvents: Updated Abraham Model Equation Coefficients for Solute Activity Coefficient and Partition Coefficient Predictions (open access)

Supporting Material for: Thermochemical Investigations of Solute Transfer into Ionic Liquid Solvents: Updated Abraham Model Equation Coefficients for Solute Activity Coefficient and Partition Coefficient Predictions

This document includes supplemental material to an article titled "Thermochemical Investigations of Solute Transfer into Ionic Liquid Solvents: Updated Abraham Model Equation Coefficients for Solute Activity Coefficient and Partition Coefficient Predictions," published in Physics and Chemistry of Liquids.
Date: February 25, 2014
Creator: Stephens, Timothy W.; Chou, Vicky; Quay, Amanda N.; Shen, Connie; Dabadge, Nishu; Tian, Amy et al.
Object Type: Text
System: The UNT Digital Library
Thermochemical Investigations of Solute Transfer into Ionic Solvents: Updated Abraham Model Equation Coefficients for Solute Activity Coefficient and Partition Coefficient Predictions (open access)

Thermochemical Investigations of Solute Transfer into Ionic Solvents: Updated Abraham Model Equation Coefficients for Solute Activity Coefficient and Partition Coefficient Predictions

Article on thermochemical investigations of solute transfer into ionic liquid solvents and updated Abraham model equation coefficients for solute activity coefficient and partition coefficient predictions.
Date: February 25, 2014
Creator: Stephens, Timothy W.; Chou, Vicky; Quay, Amanda N.; Shen, Connie; Dabadge, Nishu; Tian, Amy et al.
Object Type: Article
System: The UNT Digital Library
Comments on "Role of Anions (Tetrafluoroborate, Perchlorate) of Tetrabutylammonium Salts in Determining Solvation Effects Prevailing in Industrially Essential Solvents Probed by Conductance and FT-IR Spectra" (open access)

Comments on "Role of Anions (Tetrafluoroborate, Perchlorate) of Tetrabutylammonium Salts in Determining Solvation Effects Prevailing in Industrially Essential Solvents Probed by Conductance and FT-IR Spectra"

Article commenting on "Role of Anions (tetrafluoroborate, perchlorate) of tetrabutylammonium salts in determining solvation effects prevailing in industrially essential solvents probed by conductance and FT-IR spectra.
Date: March 7, 2014
Creator: Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
Graphene Formation on Dielectrics and Electronic Devices Formed Therefrom (open access)

Graphene Formation on Dielectrics and Electronic Devices Formed Therefrom

Patent relating to graphene formation on dielectrics and electronic devices formed therefrom.
Date: December 29, 2010
Creator: Kelber, Jeffry A.; Gaddam, Sneha Sen & Bjelkevig, Cameron L.
Object Type: Patent
System: The UNT Digital Library
Investigation of Structural and Optical Properties of Ag Nanoclusters Formed in Si(100) After Multiple Implantations of Low Energies Ag Ions and Post-Thermal Annealing at a Temperature Below the Ag-Si Eutectic Point (open access)

Investigation of Structural and Optical Properties of Ag Nanoclusters Formed in Si(100) After Multiple Implantations of Low Energies Ag Ions and Post-Thermal Annealing at a Temperature Below the Ag-Si Eutectic Point

This paper investigates the synthesis of Ag NCs in Si(100) substrate by implanting multiple energies and fluences of Ag ions and subsequent thermal annealing.
Date: April 2, 2014
Creator: Dhoubhadel, Mangal; Rout, Bibhudutta; Lakshantha, Wickramaarachchige J.; Das, Sushanta K.; D'Souza, Francis; Glass, Gary A. et al.
Object Type: Paper
System: The UNT Digital Library
Synthesis and Characterization of Dimethylbis(2-pyridyl)borate Nickel(II) Complexes: Unimolecular Square-Planar to Square-Planar Rotation around Nickel(II) (open access)

Synthesis and Characterization of Dimethylbis(2-pyridyl)borate Nickel(II) Complexes: Unimolecular Square-Planar to Square-Planar Rotation around Nickel(II)

This article reports the synthesis, characterization, and solution dynamics of the novel nickel(II) complexes (dimethylbis(2-pyridyl)borate)(triphenylphosphine)nickel(II) chloride (4) and (dimethylbis(2-pyridyl)borate)nickel(II) acetylacetonate (6).
Date: April 7, 2014
Creator: Celaje, Jeff A.; Pennington-Boggio, Megan K.; Flaig, Robinson W.; Richmond, Michael G. & Williams, Travis J.
Object Type: Article
System: The UNT Digital Library
IUPAC-NIST Solubility Data Series. 102. Solubility of Nonsteroidal Anti-inflammatory Drugs (NSAIDs) in Neat Organic Solvents and Organic Solvent Mixtures (open access)

IUPAC-NIST Solubility Data Series. 102. Solubility of Nonsteroidal Anti-inflammatory Drugs (NSAIDs) in Neat Organic Solvents and Organic Solvent Mixtures

Article on the solubility of nonsteroidal anti-inflammatory drugs (NSAIDs) in neat organic solvents and organic solvent mixtures.
Date: April 25, 2014
Creator: Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
Commentary on "Study of Assorted Interactions of an Ionic Liquid in Significant Solvent Systems using Compensated Equation of Fuoss Conductance and Vibrational Mode" (open access)

Commentary on "Study of Assorted Interactions of an Ionic Liquid in Significant Solvent Systems using Compensated Equation of Fuoss Conductance and Vibrational Mode"

Article offering commentary on the article titled "Study of assorted interactions of an ionic liquid in significant solvent systems using compensated equation of fuoss conductance and vibrational mode."
Date: May 1, 2014
Creator: Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
The Mechanisms of Methane C–H Activation and Oxy-insertion Via Small Transition Metal Complexes: a DFT Computational Investigation (open access)

The Mechanisms of Methane C–H Activation and Oxy-insertion Via Small Transition Metal Complexes: a DFT Computational Investigation

Our country continues to demand clean renewable energy to meet the growing energy needs of our time. Thus, natural gas, which is 87% by volume of methane, has become a hot topic of discussion because it is a clean burning fuel. However, the transportation of methane is not easy because it is a gas at standard temperature and pressure. The usage of transition metals for the conversion of small organic species like methane into a liquid has been a longstanding practice in stoichiometric chemistry. Nonetheless, the current two-step process takes place at a high temperature and pressure for the conversion of methane and steam to methanol via CO + H2 (syngas). The direct oxidation of methane (CH4) into methanol (CH3OH) via homogeneous catalysis is of interest if the system can operate at standard pressure and a temperature less than 250 C. Methane is an inert gas due to the high C-H bond dissociation energy (BDE) of 105 kcal/mol. This dissertation discusses a series of computational investigations of oxy-insertion pathways to understand the essential chemistry behind the functionalization of methane via the use of homogeneous transition metal catalysis. The methane to methanol (MTM) catalytic cycle is made up of two key …
Date: May 2014
Creator: Prince, Bruce M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Targeted and Metal-loaded Polymeric Nanoparticles As Potential Cancer Therapeutics (open access)

Targeted and Metal-loaded Polymeric Nanoparticles As Potential Cancer Therapeutics

Polymeric nanoparticles were designed, synthesized, and loaded with metal ions to explore the therapeutic potential for transition metals other than platinum found in cisplatin. Nanoparticles were synthesized to show the potential for polymer based vectors. Metal loading and release were characterized via Inductively Coupled Plasma Mass Spectrometry (ICP MS), Energy Dispersive X-Ray Spectroscopy (EDX), X-Ray Photoelectron Spectroscopy (XPS), and Elemental Analysis. Targeting was attempted with the expectation of observed increased particle uptake by cancer cells with flow cytometry and fluorescence microscopy. Results demonstrated that a variety of metals could be loaded to the nano-sized carriers in an aqueous environment, and that the release was pH-dependent. Expected increased targeting was inconsistent. The toxicity of these particles was measured in cancer cells where significant toxicity was observed in vitro via dosing of high copper-loaded nanoparticles and slight toxicity was observed in ruthenium-loaded nanoparticles. No significant toxicity was observed in cells dosed with metal-free nanoparticles. Future research will focus on ruthenium loaded polymeric nanoparticles with different targeting ligands dosed to different cell lines for the aim of increased uptake and decreased cancer cell viability.
Date: May 2014
Creator: Harris, Alesha N.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Fluorinated Metal-Organic Frameworks for Hydrocarbon Storage (open access)

Fluorinated Metal-Organic Frameworks for Hydrocarbon Storage

Patent relating to fluorinated metal-organic frameworks for hydrocarbon storage.
Date: October 7, 2011
Creator: Omary, Mohammad A. & Yang, Chi
Object Type: Patent
System: The UNT Digital Library
Infinite Dilution Activity Coefficients of Solutes Dissolved in Two Trihexyl(tetradecyl)phosphonium ionic liquids (open access)

Infinite Dilution Activity Coefficients of Solutes Dissolved in Two Trihexyl(tetradecyl)phosphonium ionic liquids

Article discussing infinite dilution activity coefficients of solutes dissolved in two trihexyl(tetradecyl)phosphonium ionic liquids.
Date: May 7, 2014
Creator: Mutelet, Fabrice; Alonso, Dominique; Stephens, Timothy W.; Acree, William E. (William Eugene) & Baker, Gary A.
Object Type: Article
System: The UNT Digital Library
Effects of Sulfur on Fuel Nitrogen Conversion in Combustion (open access)

Effects of Sulfur on Fuel Nitrogen Conversion in Combustion

Undergraduate thesis on the emission of atmospheric pollutants. The pollutants focused on are NO and NO₂. The author discusses the influence of sulfur on NO emission using computational chemistry.
Date: May 12, 2014
Creator: Moukambi, Odreille Mapaka
Object Type: Thesis or Dissertation
System: The UNT Digital Library
On the Solubility of Quercetin (open access)

On the Solubility of Quercetin

Article discussing the solubility of quercetin. The authors have applied a methodology based on linear free energy equations for water-solvent and gas-solvent partitions to study solubilities.
Date: May 15, 2014
Creator: Abraham, M. H. (Michael H.) & Acree, William E. (William Eugene)
Object Type: Article
System: The UNT Digital Library
5-Cyano-1,3-phenylene diacetate (open access)

5-Cyano-1,3-phenylene diacetate

This article discusses 5-cyano-1,3-phenylene diacetate.
Date: May 24, 2014
Creator: Abbassi, Bahar; Brumfield, Michela; Jones, Lloyd M.; Nesterov, Vladimir N. & Carr, Andrew J.
Object Type: Article
System: The UNT Digital Library
Supplementary materials: Thermochemical Properties of 4-N,N-Dialkylamino-7-Nitrobenzofurazan Derivatives (Alkyl = Methyl, Ethyl) (open access)

Supplementary materials: Thermochemical Properties of 4-N,N-Dialkylamino-7-Nitrobenzofurazan Derivatives (Alkyl = Methyl, Ethyl)

Supplementary data accompanying an article on thermochemical properties of 4-N,N-dialkylamino-7-nitrobenzofurazan derivatives (alkyl = methyl, ethyl).
Date: June 2014
Creator: Santos, Ana Filipa Lima Osório de Magalhães; Silva, Ana L. R.; Santiago, Otília D. F.; Gonçalves, Jorge M.; Pandey, Siddharth; Acree, William E. (William Eugene) et al.
Object Type: Article
System: The UNT Digital Library
Thermochemical Properties of 4-N,N-Dialkylamino-7-Nitrobenzofurazan Derivatives (Alkyl = Methyl, Ethyl) (open access)

Thermochemical Properties of 4-N,N-Dialkylamino-7-Nitrobenzofurazan Derivatives (Alkyl = Methyl, Ethyl)

Article discussing the thermochemical properties of 4-N,N-dialkylamino-7-nitrobenzofurazan derivatives (alkyl = methyl, ethyl).
Date: June 2014
Creator: Santos, Ana Filipa Lima Osório de Magalhães; Silva, Ana L. R.; Santiago, Otília D. F.; Gonçalves, Jorge M.; Pandey, Siddharth; Acree, William E. (William Eugene) et al.
Object Type: Article
System: The UNT Digital Library
Solubility Determination of Tris(hydroxymethyl)aminomethane in Water + Methanol Mixtures at Various Temperatures Using a Laser Monitoring Technique (open access)

Solubility Determination of Tris(hydroxymethyl)aminomethane in Water + Methanol Mixtures at Various Temperatures Using a Laser Monitoring Technique

Article on solubility determination of tris(hydroxymethyl)aminomethane in water + methanol mixtures at various temperatures using a laser monitoring technique.
Date: June 10, 2014
Creator: Jouyban-Gharamaleki, Vahid; Jouyban-Gharamaleki, Karim; Soleymani, Jafar; Acree, William E. (William Eugene) & Jouyban, Abolghasem
Object Type: Article
System: The UNT Digital Library
Rediscovery of the Elements: Cronstedt and Nickel (open access)

Rediscovery of the Elements: Cronstedt and Nickel

Article describing Axel Fredrik Cronstedt and his discovery of nickel. Information regarding pertinent locations is included.
Date: Summer 2014
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Object Type: Article
System: The UNT Digital Library